Why does it say ‘Autism’ on Smith’s shorts?

Callum’s younger sister Holly suffers with autism and so Smith, along with his three brothers all have the word sewn into their fight shorts to raise awareness.

Speaking to Boxing News, Callum said: ‘We wear “Autism” on our shorts to raise awareness and show support for other families dealing with autism, because for my mum and dad it is like a 24/7 job looking after her.

‘When she was first diagnosed we didn’t really know what it was. So when someone asks, I explain it. We’re doing our bit.’

Smith has shown huge power through his career (Picture: Getty)

Why is Smith’s nickname ‘Mundo’?

Also on Callum’s Smith is ‘Mundo’ which is a long-running nickname for the Scouse boxer.

Again talking to Boxing News, Smith explained: ‘My dad called me it when I was a kid. I was obsessed with the Turtles, the Teenage Mutant Ninja Turtles.